Ye' old general discussion board. Basically, for everything that isn't covered elsewhere. Come here to shoot the breeze, shoot your mouth off, or whatever suits your fancy. This forum is not for asking programming related questions.
Instead of finding a math forum, registering and that whole tid bit, I figured ill try my query here first. Even if someone could just tell me whats this called besides transversal lines, I would have some luck finding something helpful on the web.
So here we go a geometry question:
(not to scale)
As stated in the image AC and DB are parallel lines.
AB = 14
AC = 3
DC = 4
Now we have to find AE.
I remember having to set up a proportion? Something along the lines of:
This also fits into the category of similarity. The fact that AC||DB means that triangle ACE is similar to triangle BDE (provided segment AB and segment CD are linear). Given the similarity, you can set up proportionate equality to solve, as Oren did.
Everah wrote:This also fits into the category of similarity. The fact that AC||DB means that triangle ACE is similar to triangle BDE (provided segment AB and segment CD are linear). Given the similarity, you can set up proportionate equality to solve, as Oren did.
Everah, that's exactly what I used. "ACE =~ BDE" means "triangle ACE is similar to triangle BDE"
What do you mean by the way when you say "provided segment AB and segment CD are linear"? AC||DB that's enough.
I know that is what you meant. I just wasn't sure the OP knew that =~ means similar.
And I suppose by linear I was just complicating things. I was thinking that if the intersecting segments were curves, then it would throw similarity out the window, but I think I am just being weird (and showing my age a little. I haven't been deeply involved in Geometry for about 18 years now).
Everah wrote:I haven't been deeply involved in Geometry for about 18 years now.
Wow, and yet you remembered? That's great man... seriously. I can be a master in many different things, but if I don't use them for few months then I totally forget them. I'm really amazed that you remembered that after nearly 18 years
Math was the one thing that I really enjoyed throughout my education. I took math all the way through linear equations and differential calculus. Of course, that was 13 years ago (when I completed my math learning). Geometry was my sophomore year in high school.